If using Desktop, click HERE.
If using Mobile Web (not the App), click HERE.
From the home feed page, click on the menu (3 bars in the upper left corner).
Click "Get Togethers".
Click "Get-Togethers Joined".
Click on the name of the Get Together (Blue Letters) to view it.
Now that you know how to view the Get-Togethers you've joined, head over to the site and see your Get-Togethers you're a part of by clicking HERE.